Rough Riding at lower speeds

For some reason now in the last couple days only it's riding rough from 15 kph - 30 kph. Once It goes past 30kph it's smooths out and rides normally.. I checked everything and the engine does not appear to be loose and everything looks normal.

It could be a number of things, but since it's running fine at high RPM's I think it must be fuel. I think you are past the break in stage, right?

If so, it could just be running rich. I would say run it hard for awhile, until it's good and hot. Then run full throttle for a minute of so on the way home, shut it off and glide in. Allow the engine to cool and look at the plug. Report back. Black dry/wet plug? Light tan? Glazed?

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I took the spark plug cap off and looked at the spark plug and it looks normal to me. I don't have the tool to remove it and look at the end going into to the engine. What socket would do this ?

Not sure what to say. You'll need to look at the business end.

A spark plug socket (13/16"). One lousy one comes with the engine kit.

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Yep, the tool that comes with the kit will do it. Once you get it out, it should be from a chocolate brown to a (lightly) oily black.

If you've run the stock plug for awhile, you may just need a new one.
SPARK PLUG CROSS REFERENCE

About 3/4 of the way down, you'll see the NGK B5HS, or any of it's equivalent plugs....buy one from a mower shop, motorcycle store, or even SBP has them.

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If it ain't broke, and you mess with it long enough, it will be.

Well lucky for me I ordered one from Pablo. I have the b6 version of spark plug. I will go to Canadian Tire and see if I can find that deep socket. I will take to carb cover off and clean out the air filter again and see if that helps. The spark is only a few months old so I don't think it would be time to replace one already but then again I have started it up alot under pretty cold temp. Who knows. I'm still learning about these engines. I have learned quite abit from when I first got one.

UPDATE: I found the exact kinda of spark plug I needed at Canadian tire today. I also got a device made for removing spark plug's. It's called a spark plug tool and it's 13/16.

Waiting for the engine to cool down and then I will check the plug and post my findings.

I got the spark plug out and I put in a new one just for the sake of it. Anyway this is what the spark plug looks like that I pulled from the engine.

So, how does it run with the new plug?

__________________
If it ain't broke, and you mess with it long enough, it will be.

I dunno yet.